Still noticed IE issues, so not using jQuery form library like in 1.5.4. Made my own and seems to work better. Also prevent double click on form or resubmitting submitted form for both ajax and non ajax.

git-svn-id: https://plugins.svn.wordpress.org/a-forms/trunk@781589 b8457f37-d9ea-0310-8a92-e5e31aec5664